AnswersQ5 Biology 2014The Endocrine and Exocrine Systems

The Endocrine and Exocrine Systems — Unit test Answers

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Which of the following statements best describes the role of hormones in the body?

A
Hormones send chemical signals throughout the body to regulate other body processes.
B
Hormones are chemical signals that are sent throughout the body to regulate other body processes.
C
Hormones send electrical signals throughout the body to regulate other body processes.
D
Hormones are electrical signals that are sent throughout the body to regulate other body processes.
2
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Veins take blood back to the heart. Which gas would be most abundant in a vein that takes blood from muscle cells in the arm back to the heart?

A
carbon dioxide
B
oxygen
C
nitrogen
D
hydrogen
3

The lungs, nose, and trachea are organs of the respiratory system. Which best describes these organs?

A
They deliver nutrients to the other tissues.
B
They deliver oxygen to the blood.
C
They are both used for support.
D
They help break down food.
4

A team of scientists is working to formulate a drug that can treat children who are diagnosed with gigantism. Which effect should the drug have on patients?

A
starts the secretion of substances from the adrenal gland that decrease growth
B
increases the secretion of substances from the reproductive glands that stop growth
C
stops the secretion of substances from the thyroid gland that cause growth
D
decreases the secretion of substances from the pituitary gland that cause growth
5

Sound can be heard when air passes over a respiratory structure that is located between the pharynx and the trachea.Which structure is responsible for the voice?

A
the nose
B
the larynx
C
the lung
D
the alveoli
6

The nervous system is a part of the autonomic system that conserves energy by returning the body to a normal activity level through a lowered heart rate and blood pressure.

Answer not available
7

Which injury would likely cause the body to permanently lose the ability to perform simple reflexes?

A
damage to the nerve cells in the spinal cord
B
a muscle tear in the leg
C
the death of a single neuron in the body
D
harm to a nerve in the skin
8

Once the body has begun shivering, what happens to make it stop shivering?

A
When body temperature returns to normal, the respiratory system sends a message to the skeletal system to stop shivering.
B
When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shivering.
C
When body temperature is below normal, the nervous system sends a message to the skeletal system to stop shivering.
D
When body temperature is below normal, the respiratory system sends a message to the muscular system to stop shivering.
9

Which is the temporary storage tank for urine?

A
bladder
B
stomach
C
kidney
D
urethra
10

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. By changing the amount of water in the blood, blood pressure can change. The excretory system can help to lower blood pressure.Which would most likely occur in the kidney?

A
More water would be transferred from the nephron.
B
Less water would be absorbed into the nephron.
C
The amount of water in the bladder would decrease.
D
The amount of water in the blood would increase.
11

Which structures are parts of the central nervous system? Select all that apply.the brainthe heartthe spinal cordthe sensory neuronsthe bonesthe muscles

A
the brain
B
the heart
C
the spinal cord
D
the sensory neurons
E
the bones
F
the muscles
12

Neurons and neuroglia work together to form nervous tissue, which is part of the nervous system. Which describes neurons and neuroglia?

A
They are specialized organs that form an organ system.
B
They are organs that form tissue.
C
They are specialized tissues that form an organ system.
D
They are cells that form tissue.
13

Heather presented to her class a report about the pancreas. Which statement in Heather’s report was not accurate?

A
The pancreas has both endocrine and exocrine functions.
B
The pancreas regulates blood sugar concentration.
C
The pancreas triggers the development of secondary sex characteristics.
D
The pancreas helps digest fat, protein, and carbohydrates.
14

Which blood component makes up 41% of the blood’s volume?

A
plasma
B
red blood cells
C
platelets
D
white blood cells
15

Lewis is exercising and his muscles need oxygen. Which best describes how systems interact to bring his body into homeostasis?

A
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the muscular system.
B
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the muscular system.
C
The respiratory system brings oxygen to the circulatory system, which delivers oxygen to the skeletal system.
D
The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the skeletal system.
16

Which part of the autonomic system is most likely to be dominant while someone is napping after lunch?

A
the peripheral nervous system
B
the sympathetic nervous system
C
the somatic nervous system
D
the parasympathetic nervous system
17

The picture represents a protein in the stomach being broken down into individual amino acids.

Question illustration
A
villi
B
enzymes
C
saliva
D
fat
18

Which of the following describes a negative feedback loop?

A
When the heart rate is too high, the body sends hormones that continually increase the heart rate higher.
B
When a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones.
C
When blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows.
D
When a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.
19

Which product of respiration is considered waste material and leaves the alveoli?

A
oxygen
B
water
C
carbon dioxide
D
carbon monoxide
20

PeristalsisSalivationDigestionSecretion

A
Peristalsis
B
Salivation
C
Digestion
D
Secretion

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